/Engine/Source/Editor/BlueprintGraph/Classes/EdGraphSchema_K2.h
Given a function and property, return the default value
static bool FindFunctionParameterDefaultValue ( const [UFunction](API\Runtime\CoreUObject\UObject\UFunction) * Function, const [FProperty](API\Runtime\CoreUObject\UObject\FProperty) * Param, [FString](API\Runtime\Core\Containers\FString) & OutString )